The phylogeny of the genus Leucorrhinia and the evolution of larval spines(Anisoptera : Libellulidae)

Authors
Westman, A Johansson, F Nilsson, AN
Citation
A. Westman et al., The phylogeny of the genus Leucorrhinia and the evolution of larval spines(Anisoptera : Libellulidae), ODONATOLOGI, 29(2), 2000, pp. 129-136
Citations number
29
Categorie Soggetti
Entomology/Pest Control
Journal title
ODONATOLOGICA
ISSN journal
03750183 → ACNP
Volume
29
Issue
2
Year of publication
2000
Pages
129 - 136
Database
ISI
SICI code
0375-0183(20000601)29:2<129:TPOTGL>2.0.ZU;2-Q
Abstract
A cladistic analysis of the genus Leucorrhinia, based on adult morphologica l characters, found one most parsimonous tree with a consistency index of 0 .35. The evolution of large dorsal larval spines was mapped on the resultin g tree. This mapping suggests that the presence of spines is the primitive state within Leucorrhinia and that they have disappeared on five different occasions, or have disappeared twice on lower branches and reappeared three times higher up in the tree.